How to Make It
In a small bowl, stir the vodka with the soy sauce, ketchup and vinegar. In a large skillet, heat the oil. Add the chiles, ginger and Sichuan peppercorns and stir-fry over high heat until the chiles and peppercorns darken and the ginger starts to brown, about 2 minutes. Add the garlic and stir-fry until golden, about 10 seconds. Add the shrimp, season lightly with salt and stir-fry until just cooked, about 3 minutes.
Remove the skillet from the heat and slowly add the vodka sauce. Using a long match, carefully light the sauce. Return the skillet to the heat and bring the sauce to a simmer, stirring. Add the scallions; serve.